A private investigator is a person who has been specially trained in the field of investigation. The job of a private investigator is to get information and evidence needed by clients for various reasons. They are trained to get things done in a particular manner which benefits the clients. A private investigator’s job is normally done very discreetly and confidentially using various ways to get the job done. This is a very broad field with many different areas to cover. It is an area of expertise that requires specialist training, special skills and techniques and an abundance of the necessary knowledge.